Magpul lower, SPR Mk12 MOD 1 carbine length front end, VLTOR MUR, and a JP mag stock (I would of course settle for one of the ACE stocks pictured w/ a PEQ, but, seriously, doesn't magpul have a license with JP? and the "mag" in the stock could be perfect for a battery like the redimag system, but not ugly as sin)

I mean, how many more m4s can they make without coincidentally making this